docs: def jackknife_indexes(data):
      """
  Given data points data, where axis 0 is considered to delineate points, return
  a list of arrays where each array is a set of jackknife indexes.
  
  For a given set of data Y, the jackknife sample J[i] is defined as the data set
  Y with the ith data point deleted.
      """
      base = np.arange(0,len(data))
      return (np.delete(base,i) for i in base)